Dungeons and Dragons

Of course, I made Dungeon maker because I found being a player on Roll20 was a pretty lackluster experience (and not entirely free, my DM friend spent a lot of money on it). I can't speak to how exactly it compares to other alternatives as I haven't used many, so I can just talk about what it does do and let you decide if it sounds good.

Dungeon Maker comes with an intuitive tile based map editor for making encounters, including random map generators that can give you a starting point for your maps. It automatically creates barriers to movement and vision with placed objects and walls so you don't have to worry about that. It supports multi-story maps, allowing you to go vertical with your design, whether that be ,multiple stories to buildings, or perhaps cliff faces. There's also built in note tools you can use to place notes anywhere on your maps, teleporters that will instantly move players and NPCs that step on them, hidden doors, toggleable lights, and more.

The built in asset editor lets you add custom art to the map, so you can change up the art style of the game, or just add custom objects.

The campaign map mode allows you to easily tie together your campaign maps into one place between encounters that your players can move freely around.

The lighting system lets you change the time of day on your maps during play, and the in game lighting will reflect that. You can toggle any light source on and off, allowing you to make fun and interesting scenarios for your players, such as stealth missions. The DM has the standard abilities to control enemies and NPCs, move players around, toggle door locks and open and close doors. They can also add enemies and NPCs to maps on the fly, so you can change up your encounters quickly and easily. There's also a built in battle tracker to handle turn order and initiative automatically.

There is an action and spell editor in the game that lets you create most damage and healing based spells in DnD. Spells are animated in the game, which adds some flair to your encounters, and lets everyone see exactly where they went off. There's also support for duration spells, and moving them around.

There is Steam Workshop support, so you can share your characters, NPCs, Enemies, Campaigns, Map Blueprints, and Custom Assets with other players.

Overall I've found it makes being a DM easy and fun, and my players have enjoyed using it. Hopefully it sounds good to you.

I forgot to mention, the map maker also includes a map exporter, so if you want to use Dungeon maker to make map sheets to either print out maps or use them in other programs you absolutely can.